Dell OptiPlex 5055 Ryzen CPU Tower OptiPlex 5055 Tower Owners Manual - Page 55
USB features, Key Specifications, USB 3.1 Gen 1 SuperSpeed USB, Speed
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Key Specifications The following table contains the key specifications of the AMD Radeon R5 M430: Table 5. Key Specifications Specification Radeon R5 M400 Series Codename Architecture Pipelines Memory Bus Width Shared Memory Technology DirectX AMD Radeon R5 M430 Radeon R5 M430 Sun XT GCN 320 - unified 64 Bit No 28 nm DirectX 12 USB features Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral devices like mice, keyboards, external drivers, and printers. Let's take a quick look on the USB evolution referencing to the table below. Table 6. USB evolution Type Data Transfer Rate USB 3.0/USB 3.1 Gen 2 5 Gbps USB 2.0 480 Mbps Category Super Speed High Speed Introduction Year 2010 2000 USB 3.1 Gen 1 (SuperSpeed USB) For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the PC world with about 6 billion devices sold, and yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth demands. The USB 3.1 Gen 1 finally has the answer to the consumers' demands with a theoretically 10 times faster than its predecessor. In a nutshell, USB 3.1 Gen 1 features are as follows: • Higher transfer rates (up to 5 Gbps) • Increased maximum bus power and increased device current draw to better accommodate power-hungry devices • New power management features • Full-duplex data transfers and support for new transfer types • Backward USB 2.0 compatibility • New connectors and cable The topics below cover some of the most commonly asked questions regarding USB 3.1 Gen 1. Speed Currently, there are 3 speed modes defined by the latest USB 3.1 Gen 1 specification. They are Super-Speed, Hi-Speed and Full-Speed. The new SuperSpeed mode has a transfer rate of 4.8Gbps. While the specification retains Hi-Speed, and Full-Speed USB mode, commonly known as USB 2.0 and 1.1 respectively, the slower modes still operate at 480Mbps and 12Mbps respectively and are kept to maintain backward compatibility. Technology and components 55
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